The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2001
Filed:
Jun. 12, 1998
Applicant:
Inventor:
Masami Hatori, Kanagawa-ken, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa-Ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/377 ;
U.S. Cl.
CPC ...
G02F 1/377 ;
Abstract
An optical wavelength conversion system includes an optical waveguide type optical wavelength conversion element having periodic domain reversals, and a semiconductor laser which generates a laser beam which is caused to enter the optical wavelength conversion element as a fundamental wave. A part of the laser beam is split by a beam splitter upstream of the optical wavelength conversion element, and the split part of the laser beam is reflected by a mirror and fed back to the semiconductor laser. A narrow band pass filter is disposed between the beam splitter and the mirror.